Home / 938,705,122.90-1,408,561,569.15-393,501,769.30

Finding the Fourth Proportional to 938,705,122.90, 1,408,561,569.15 and 393,501,769.30

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Solution

The fourth proportional to 938,705,122.90, 1,408,561,569.15 and 393,501,769.30 is: 590,463,880.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,705,122.90 : 1,408,561,569.15 = 393,501,769.30 : x
  2. Step 2: Convert to fraction form
    938,705,122.90/1,408,561,569.15 = 393,501,769.30/x
  3. Step 3: Cross multiply
    938,705,122.90x = 1,408,561,569.15 × 393,501,769.30
  4. Step 4: Simplify right side
    938,705,122.90x = 554,271,469,628,509,376
  5. Step 5: Solve for x
    x = 554,271,469,628,509,376/938,705,122.90
  6. Step 6: Final answer
    x = 590,463,880.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.